RA Capital Management, L.P. 13D and 13G filings for ImmunoGen, Inc.:
- Schedule 13D must be filed within ten days after a person or an organization acquires beneficial ownership of more than 5% of a voting class of a company's equity securities.
- Shares have been adjusted for stock splits.
| Reported DateTime |
Transaction Date |
Type | Company Symbol |
Filed By Symbol |
Shares Owned % Owned |
Shares Vs. Prev Report | View |
| 2024-02-14 5:01 pm Purchase |
2023-12-31 | 13G | ImmunoGen, Inc. IMGN |
RA Capital Management, L.P. | 26,916,027 9.990% |
4,840,869 (+21.93%) |
Filing |
| 2023-02-14 4:45 pm Sale |
2022-12-31 | 13G | ImmunoGen, Inc. IMGN |
RA Capital Management, L.P. | 22,075,158 9.990% |
-87,800 (-0.40%) |
Filing |
| 2022-02-14 4:11 pm Purchase |
2021-12-31 | 13G | ImmunoGen, Inc. IMGN |
RA Capital Management, L.P. | 22,162,958 9.990% |
3,745,500 (+20.34%) |
Filing |
| 2021-02-16 4:39 pm Purchase |
2020-12-31 | 13G | ImmunoGen, Inc. IMGN |
RA Capital Management, L.P. | 18,417,458 9.800% |
18,417,458 (New Position) |
Filing |